Book Recommendation?

What is the recommended Mindstorms book for kids in the 11 - 13 year old
range that uses ONLY RCX-code and builds software building block concepts.
That is, not just "build this robot and here is its program, now build that
one". But rather a book that actually teaches software concepts based upon
RCX code...

Such as :  You use a "repeat-until" in this case, a "repeat-forever" in this
case, you use a sensor watcher in this case, a "yes-no" block in this case.
And, after learning those concepts, this is how they can be used to build up
a simple program. Now, add this idea. Next, add this other idea... and the
ideas build together in such a way that the child actually learns to "think"
in terms of software constructs.

The book would not focus much at all on the physical building of the robots
themselves (other books do that).

Many (most) books seem to be not written with this type of idea in mind.
They mostly just present various robot creations, and are typically written
more for adults than children of that age.

And so, after all of that... are there any books out that that address more
the software aspects of RCX programming?

Thanks.
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Did you check the web site first?: http://www.crynwr.com/lego-robotics